How does the USPTO treat claims held “not invalid” by a federal court in reexamination?
The USPTO may still reexamine claims that have been held “not invalid” by a federal court. According to MPEP § 2259: “Claims finally held as ‘not invalid’ by a federal court, after all appeals, may still be subject to reexamination.” This means that even if a court has upheld the validity of certain claims, the…
Read More